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US 11,807,446 B2Granted
Method of producing a package of compressed innerspring units
AssigneeL&P Swiss Holding AG
InventorsStjepan Vadlja, Josip Maric, Dinko Ursic, Stjepan Glozinic
Life of this patent
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Abstract
A flat-packing machine for producing a package of compressed innerspring units comprises a press device having a first pressing tool and a second pressing tool. The press device is configured to compress an innerspring unit between the first pressing tool and the second pressing tool while one of the first pressing tool and the second pressing tool holds one or more further previously compressed innerspring units in a compressed state.
Claims19
A method of producing a package of compressed innerspring units, the method comprising the steps:
- compressing a first innerspring unit by moving a first pressing tool along a compression direction;
- after compressing the first innerspring unit, compressing a second innerspring unit by moving a second pressing tool in the compression direction, while the first pressing tool remains between the first innerspring unit and the second innerspring unit and holds the first innerspring unit in the compressed state;
- and
- after compressing the second innerspring unit, withdrawing the first pressing tool from between the first innerspring unit and the second innerspring unit, wherein the method is performed using a flat-packing machine for producing a package of compressed innerspring units, the flat-packing machine comprising:
- a press device having the first pressing tool and the second pressing tool;
- wherein the press device is configured to compress an innerspring unit between the first pressing tool and the second pressing tool while one of the first pressing tool and the second pressing tool holds one or more further previously compressed innerspring units in a compressed state,
- wherein the press device comprises:
- a first drive configured to move the first pressing tool along a compression direction of the innerspring units;
- a second drive configured to move the second pressing tool along the compression direction;
- a third drive configured to move the first pressing tool along a first retraction direction perpendicular to the compression direction;
- a fourth drive configured to move the second pressing tool along a second retraction direction perpendicular to the compression direction,
- wherein the first pressing tool comprises a first pair of pressing plates which are moveable in opposite directions by the third drive;
- and
- wherein the second pressing tool comprises a second pair of pressing plates which are moveable in opposite directions by the fourth drive.
11 more elements
A method of producing a package of compressed innerspring units, the method comprising the steps:
- placing a first frame in a press device, the press device comprising first and second pressing tools;
- placing a first set of ladder elements on the first frame;
- placing a first sheet of outer packaging material on the first set of ladder elements;
- placing a first innerspring unit with a first sheet of separating material on the first sheet of outer packaging material;
- moving a pair of pressing plates of the first pressing tool towards each other to substantially cover the first innerspring unit;
- compressing the first innerspring unit by moving the first pressing tool in a z-direction;
- placing a second innerspring unit with a second sheet of separating material on the pair of pressing plates of the first pressing tool;
- moving a pair of pressing plates of the second pressing tool towards each other to substantially cover the second innerspring unit;
- compressing the second innerspring unit by moving the second pressing tool in the z-direction while the first pressing tool keeps the first innerspring unit in a compressed state;
- withdrawing the pressing plates of the first pressing tool to a retracted position and moving the first pressing tool upwards past the second pressing tool;
- placing a third innerspring unit with a third sheet of separating material on the pair of pressing plates of a second pressing tool;
- using the first pressing tool of the press device to compress the third innerspring unit;
- adding and compressing additional innerspring units using the press device to create a stack of compressed innerspring units;
- placing a second sheet of outer packaging material on the stack;
- placing a second set of ladder elements on the second sheet of outer packaging material;
- placing a second frame on top of the second set of ladder elements;
- clamping the first and second frames with a bracket element to form a crate.
14 more elements
A method of producing a package of compressed innerspring units, the method comprising the steps:
- placing a first frame in a press device, the press device comprising first and second pressing tools;
- placing a first set of ladder elements on the first frame;
- placing a first sheet of outer packaging material on the first set of ladder elements;
- placing a first innerspring unit with a first sheet of separating material on the first sheet of outer packaging material;
- compressing the first innerspring unit by moving a first pressing tool in a z-direction;
- placing a second innerspring unit with a second sheet of separating material on the first pressing tool;
- compressing the second innerspring unit by moving the second pressing tool in the z-direction while the first pressing tool keeps the first innerspring unit in a compressed state;
- withdrawing the first pressing tool to a retracted position and moving the first pressing tool upwards past the second pressing tool;
- placing a third innerspring unit with a third sheet of separating material on the second pressing tool;
- using the first pressing tool to compress the third innerspring unit;
- adding and compressing additional innerspring units using the press device to create a stack of compressed innerspring units;
- placing a second sheet of outer packaging material on the stack;
- placing a second set of ladder elements on the second sheet of outer packaging material;
- placing a second frame on top of the second set of ladder elements;
- clamping the first and second frames with a bracket element to form a crate;
- and
- applying banding to the stack of compressed innerspring units enclosed by the crate before releasing the package from the crate.
14 more elements
Dependencies are inferred from the claim text.